[INFO] cloning repository https://github.com/softprops/prefix
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/softprops/prefix" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoftprops%2Fprefix", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoftprops%2Fprefix'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c7e58f1487789a15353f371a9a5ee867a1929136
[INFO] checking softprops/prefix against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoftprops%2Fprefix" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/softprops/prefix on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/softprops/prefix
[INFO] finished tweaking git repo https://github.com/softprops/prefix
[INFO] tweaked toml for git repo https://github.com/softprops/prefix written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/softprops/prefix already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded path-slash v0.1.1
[INFO] [stderr]   Downloaded serde_test v1.0.101
[INFO] [stderr]   Downloaded tokio v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 26034e0aa90384e0e0aab99a9871655c8f1c5af263af1b6f00e826d9fe92009c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "26034e0aa90384e0e0aab99a9871655c8f1c5af263af1b6f00e826d9fe92009c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26034e0aa90384e0e0aab99a9871655c8f1c5af263af1b6f00e826d9fe92009c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26034e0aa90384e0e0aab99a9871655c8f1c5af263af1b6f00e826d9fe92009c", kill_on_drop: false }`
[INFO] [stdout] 26034e0aa90384e0e0aab99a9871655c8f1c5af263af1b6f00e826d9fe92009c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5fb05272c29f49c93074ffbe07646791687bf72c941cea852e7f4344b667bd3f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5fb05272c29f49c93074ffbe07646791687bf72c941cea852e7f4344b667bd3f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking futures-core v0.3.1
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]     Checking futures-io v0.3.1
[INFO] [stderr]     Checking arc-swap v0.4.3
[INFO] [stderr]     Checking bytes v0.5.2
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking path-slash v0.1.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking colored v1.9.0
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking futures-channel v0.3.1
[INFO] [stderr]     Checking signal-hook-registry v1.1.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling tokio-macros v0.2.0
[INFO] [stderr]    Compiling structopt-derive v0.3.3
[INFO] [stderr]     Checking tokio v0.2.2
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]     Checking structopt v0.3.3
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stderr]     Checking serde_test v1.0.101
[INFO] [stderr]     Checking linked-hash-map v0.5.2
[INFO] [stderr]     Checking yaml-rust v0.4.3
[INFO] [stderr]     Checking serde_yaml v0.8.11
[INFO] [stderr]     Checking prefix v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 10s
[INFO] running `Command { std: "docker" "inspect" "5fb05272c29f49c93074ffbe07646791687bf72c941cea852e7f4344b667bd3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fb05272c29f49c93074ffbe07646791687bf72c941cea852e7f4344b667bd3f", kill_on_drop: false }`
[INFO] [stdout] 5fb05272c29f49c93074ffbe07646791687bf72c941cea852e7f4344b667bd3f